PROBLEM TO BE SOLVED: To provide a method for producing unpolished rice flour as a raw material for producing breads by using wholly unpolished rice grains, and the unpolished rice flour for producing the breads.SOLUTION: This method for producing the unpolished rice flour which can produce fluffy breads swelling enough on baking is provided by immersing unpolished rice grains in water for &ge12 h and milling with a vortex flow type crusher (a super powder mill), and the unpolished rice flour produced by the method is also provided.